package com.daoshun.common;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Arrays;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.http.Consts;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpRequest {

	/**
	 * 向指定URL发送GET方法的请求
	 * 
	 * @param url
	 *            发送请求的URL
	 * @param param
	 *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return URL 所代表远程资源的响应结果
	 */
	public static String sendGet(String url, String param) {
		String result = "";
		BufferedReader in = null;
		try {
			String urlNameString = url;
			if (param == null || param.trim().length() == 0) {
			} else {
				urlNameString += "?" + param;
			}
			URL realUrl = new URL(urlNameString);
			// 打开和URL之间的连接
			URLConnection connection = realUrl.openConnection();
			// 设置通用的请求属性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 建立实际的连接
			connection.connect();
			// 获取所有响应头字段
			// Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
			// for (String key : map.keySet()) {
			// System.out.println(key + "--->" + map.get(key));
			// }
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			// System.out.println("发送GET请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输入流
		finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return result;
	}

	/**
	 * 向指定 URL 发送POST方法的请求
	 * 
	 * @param url
	 *            发送请求的 URL
	 * @param param
	 *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param) {
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			// System.out.println("发送 POST 请求出现异常！" + e);
			e.printStackTrace();
		}
		// 使用finally块来关闭输出流、输入流
		finally {
			try {
				if (out != null) {
					out.close();
				}
				if (in != null) {
					in.close();
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return result;
	}

	public static String httpGetSend(String url, String data, boolean is_token) {
		HttpClient httpclient = new HttpClient();

		if (!CommonUtils.isEmptyString(data)) {
			url += "?" + data;
		}
		// 创建post方法实例
		GetMethod getMethod = new GetMethod(url);

		if (is_token) {
			getMethod.setRequestHeader("Authorization", "Bearer " + DsConstant.ACCESS_TOKEN);
		}

		String result = "";
		try {
			httpclient.executeMethod(getMethod);
			InputStream responseBody = getMethod.getResponseBodyAsStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(responseBody, "utf-8"));
			String line = reader.readLine();
			while (line != null) {
				result += line;
				line = reader.readLine();
			}
		} catch (HttpException e) {
			// TODO: handle exception
			System.out.println("Please check your provided http address!");
			e.printStackTrace();
		} catch (IOException e) {
			// TODO: handle exception
			System.out.println("the line is wrong!");
			e.printStackTrace();
		} finally {
			System.out.println(result);
			getMethod.releaseConnection();
		}
		return result;
	}

	@SuppressWarnings("deprecation")
	public static String httpPostSend(String url, String data, boolean is_token) {
		HttpClient httpclient = new HttpClient();

		// 创建post方法实例
		PostMethod postMethod = new PostMethod(url);

		if (is_token) {
			postMethod.setRequestHeader("Authorization", "Bearer " + DsConstant.ACCESS_TOKEN);
		}

		if (!CommonUtils.isEmptyString(data)) {
			postMethod.setRequestBody(data);
		}

		String result = "";
		try {
			httpclient.executeMethod(postMethod);
			InputStream responseBody = postMethod.getResponseBodyAsStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(responseBody, "utf-8"));
			String line = reader.readLine();
			while (line != null) {
				result += line;
				line = reader.readLine();
			}
		} catch (HttpException e) {
			// TODO: handle exception
			System.out.println("Please check your provided http address!");
			e.printStackTrace();
		} catch (IOException e) {
			// TODO: handle exception
			System.out.println("the line is wrong!");
			e.printStackTrace();
		} finally {
			System.out.println(result);
			postMethod.releaseConnection();
		}
		return result;
	}

	public static String httpDeleteSend(String url, String data, boolean is_token) {
		HttpClient httpclient = new HttpClient();

		// 创建post方法实例

		DeleteMethod deleteMethod = new DeleteMethod(url);

		if (is_token) {
			deleteMethod.setRequestHeader("Authorization", "Bearer " + DsConstant.ACCESS_TOKEN);
		}

		if (!CommonUtils.isEmptyString(data)) {
			deleteMethod.setQueryString(data);
		}

		String result = "";
		try {
			httpclient.executeMethod(deleteMethod);
			InputStream responseBody = deleteMethod.getResponseBodyAsStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(responseBody, "utf-8"));
			String line = reader.readLine();
			while (line != null) {
				result += line;
				line = reader.readLine();
			}
		} catch (HttpException e) {
			// TODO: handle exception
			System.out.println("Please check your provided http address!");
			e.printStackTrace();
		} catch (IOException e) {
			// TODO: handle exception
			System.out.println("the line is wrong!");
			e.printStackTrace();
		} finally {
			System.out.println(result);
			deleteMethod.releaseConnection();
		}
		return result;
	}

	public static String httpPutSend(String url, String data, boolean is_token) {
		HttpClient httpclient = new HttpClient();

		if (!CommonUtils.isEmptyString(data)) {
			url += "?" + data;
		}
		// 创建post方法实例
		PutMethod putMethod = new PutMethod(url);

		if (is_token) {
			putMethod.setRequestHeader("Authorization", "Bearer " + DsConstant.ACCESS_TOKEN);
		}

		String result = "";
		try {
			httpclient.executeMethod(putMethod);
			InputStream responseBody = putMethod.getResponseBodyAsStream();
			BufferedReader reader = new BufferedReader(new InputStreamReader(responseBody, "utf-8"));
			String line = reader.readLine();
			while (line != null) {
				result += line;
				line = reader.readLine();
			}
		} catch (HttpException e) {
			// TODO: handle exception
			System.out.println("Please check your provided http address!");
			e.printStackTrace();
		} catch (IOException e) {
			// TODO: handle exception
			System.out.println("the line is wrong!");
			e.printStackTrace();
		} finally {
			System.out.println(result);
			putMethod.releaseConnection();
		}
		return result;
	}
	
	public static String postKuaige(String url, NameValuePair... params) {
		HttpPost method = new HttpPost(url);
		try {
			if (params != null) {
				method.setEntity(new UrlEncodedFormEntity(Arrays.asList(params), Consts.UTF_8));
			}
			CloseableHttpClient client = HttpClients.createDefault();
			CloseableHttpResponse response = client.execute(method);
			try {
				System.out.println(response.getStatusLine().getStatusCode());
				if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
					return EntityUtils.toString(response.getEntity());
				}
			} finally {
				response.close();
			}
		} catch (IOException e) {
			e.printStackTrace();
			System.out.println(e.getMessage());
		} finally {
			method.releaseConnection();
		}
		return "SERVER ERROR";
	}

}
